.main{
    width: 100%;
    height: auto;
    overflow: hidden;
    background: #efefef;
}
.content{
    height: auto;
    position: relative;
    background: #fff;
}
/*导航*/
.propaganda{
    width: 100%;
    margin: 0 auto;
    position: relative;
    margin-top: 50px;
}
.propaganda img{
    width: 100%;

}
.propaganda .tab{
    bottom: 0;
    width: 80%;
    margin: 0 auto;
}
.propaganda .tab div{
    width: 30%;
    height: 100%;
    display: inline-block;
    background: #FFFFFF;
    text-align: center;
    line-height: 55px;
    font-weight: bold;
    margin-right: 8%;
    cursor: pointer;
}
.propaganda .tab a{
    color: #000;
    text-decoration: none;
}
.propaganda .tab>a:nth-child(2) div{
    color: #000;
}
.propaganda .tab a div.on{
    color: #f26d1c;
    border-bottom: 2px solid #f26d1c;
    height: 55px;
}
.propaganda .tab a.claue:nth-child(1) div{
    color: #fff;
    background: linear-gradient(110deg, transparent 20px, #58a 0) top left;
}
.propaganda .tab a.claue:nth-child(1) div{
    color: #fff;
    background: linear-gradient(110deg, transparent 20px, #58a 0) top left;
}
.propaganda .tab a.on2  div{
    color: #f26d1c;
    background: #fff;
}
/*内容*/
.about{
    margin-top: 40px;
}
.content_nr{
    width: 90%;
    background: #fff;
    padding: 25px 0;
    margin: 0 auto;
}
.content_nr .title{
    position: relative;
    width: 100%;
    margin-bottom: 30px;
}
.content_nr .title span:nth-child(1){
    position: relative;
    top:12px;
}
.content_nr .title span:nth-child(2){
    position: relative;
    color: #f26d1c;
    font-weight: bolder;
    font-size: 18px;
    left: 10px;
}
.content_nr .title span:nth-child(3){
    position: absolute;
    width: 53.7%;
    border-bottom: 1px solid #f26d1c;
    right:0;
    top:73%;
}
.content_nr .nr p{
    color: #292c38;
    font-size: 14px;
    line-height: 30px;
    margin-bottom: 20px;
    text-indent: 2em;
    width: 100%;
}
.content_nr .nr2 p{
    color: #000;
    font-weight: bolder;
}
.content_nr .nr3{
    min-height: 150px;
}